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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkImageToListGenerator.txx,v $
Language: C++
Date: $Date: 2007-12-19 17:22:48 $
Version: $Revision: 1.6 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkImageToListGenerator_txx
#define __itkImageToListGenerator_txx
#include "itkImageToListGenerator.h"
#include "itkImageRegionConstIterator.h"
namespace itk {
namespace Statistics {
template < class TImage, class TMaskImage >
ImageToListGenerator< TImage, TMaskImage >
::ImageToListGenerator()
{
this->SetNumberOfRequiredInputs(1);
this->SetNumberOfRequiredOutputs(1);
typename ListSampleOutputType::Pointer listSampleDecorator =
static_cast< ListSampleOutputType * >( this->MakeOutput(0).GetPointer() );
this->ProcessObject::SetNthOutput(0, listSampleDecorator.GetPointer());
m_MaskValue = NumericTraits<MaskPixelType>::max();
}
template < class TImage, class TMaskImage >
void
ImageToListGenerator< TImage, TMaskImage >
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os,indent);
os << indent << "MaskValue: "
<< static_cast<typename NumericTraits<MaskPixelType>::PrintType>(
m_MaskValue)
<< std::endl;
}
template < class TImage, class TMaskImage >
void
ImageToListGenerator< TImage, TMaskImage >
::SetInput(const ImageType* image)
{
// Process object is not const-correct so the const_cast is required here
this->ProcessObject::SetNthInput(0,
const_cast< ImageType* >( image ) );
}
template < class TImage, class TMaskImage >
void
ImageToListGenerator< TImage, TMaskImage >
::SetMaskImage(const MaskImageType* image)
{
// Process object is not const-correct so the const_cast is required here
this->ProcessObject::SetNthInput(1,
const_cast< MaskImageType* >( image ) );
}
template < class TImage, class TMaskImage >
const TImage*
ImageToListGenerator< TImage, TMaskImage >
::GetInput() const
{
if (this->GetNumberOfInputs() < 1)
{
return 0;
}
return static_cast<const ImageType * >
(this->ProcessObject::GetInput(0) );
}
template < class TImage, class TMaskImage >
const TMaskImage*
ImageToListGenerator< TImage, TMaskImage >
::GetMaskImage() const
{
if (this->GetNumberOfInputs() < 2)
{
return 0;
}
return static_cast<const MaskImageType * >
(this->ProcessObject::GetInput(1) );
}
template < class TImage, class TMaskImage >
typename ImageToListGenerator< TImage, TMaskImage >::DataObjectPointer
ImageToListGenerator< TImage, TMaskImage >
::MakeOutput(unsigned int itkNotUsed(idx))
{
typename ListSampleOutputType::Pointer decoratedOutput =
ListSampleOutputType::New();
decoratedOutput->Set( ListSampleType::New() );
return static_cast< DataObject * >(decoratedOutput.GetPointer());
}
template < class TImage, class TMaskImage >
void
ImageToListGenerator< TImage, TMaskImage >
::GenerateData()
{
ListSampleOutputType * decoratedOutput =
static_cast< ListSampleOutputType * >(
this->ProcessObject::GetOutput(0));
ListSampleType *output =
const_cast< ListSampleType * >( decoratedOutput->Get() );
const ImageType *input = this->GetInput();
MaskImageType *maskImage = NULL;
output->Clear();
if (this->GetNumberOfInputs() > 1)
{
maskImage = const_cast< MaskImageType * >(this->GetMaskImage());
}
typedef ImageRegionConstIterator< ImageType > IteratorType;
IteratorType it( input, input->GetBufferedRegion() );
it.GoToBegin();
if (maskImage) // mask specified
{
typedef ImageRegionConstIterator< MaskImageType > MaskIteratorType;
MaskIteratorType mit( maskImage, input->GetBufferedRegion() );
mit.GoToBegin();
while (!it.IsAtEnd())
{
if (mit.Get() == this->m_MaskValue)
{
MeasurementVectorType m;
m[0] = it.Get();
output->PushBack(m);
}
++mit;
++it;
}
}
else // no mask specified
{
while (!it.IsAtEnd())
{
MeasurementVectorType m;
m[0] = it.Get();
output->PushBack(m);
++it;
}
}
}
template < class TImage, class TMaskImage >
void
ImageToListGenerator< TImage, TMaskImage >
::GenerateOutputInformation()
{
Superclass::GenerateOutputInformation();
ListSampleOutputType * decoratedOutput =
static_cast< ListSampleOutputType * >(
this->ProcessObject::GetOutput(0));
ListSampleType *output =
const_cast< ListSampleType *>( decoratedOutput->Get() );
output->SetMeasurementVectorSize(
itkGetStaticConstMacro( MeasurementVectorSize ));
}
template < class TImage, class TMaskImage >
void
ImageToListGenerator< TImage, TMaskImage >
::GenerateInputRequestedRegion() throw(InvalidRequestedRegionError)
{
// call the superclass' implementation of this method. this should
// copy the output requested region to the input requested region
Superclass::GenerateInputRequestedRegion();
// Make sure that the mask's requested region, if specified is at least
// as large as the input image's buffered region. If not funny things can
// happen such as the mask iterator going out of bounds etc..
//
// TODO: Why don't most other ITK filters that take multiple inputs check
// for this ?
//
if (this->GetNumberOfInputs() > 1)
{
MaskImageType *maskImage =
const_cast< MaskImageType * >(this->GetMaskImage());
ImageType *image =
const_cast< ImageType * >( this->GetInput() );
if (!image->GetBufferedRegion().IsInside( maskImage->GetBufferedRegion()) )
{
maskImage->SetRequestedRegion( image->GetBufferedRegion() );
}
}
}
template < class TImage, class TMaskImage >
const typename ImageToListGenerator< TImage, TMaskImage >::ListSampleType *
ImageToListGenerator< TImage, TMaskImage >
::GetListSample() const
{
const ListSampleOutputType * decoratedOutput =
static_cast< const ListSampleOutputType * >(
this->ProcessObject::GetOutput(0));
return decoratedOutput->Get();
}
} // end of namespace Statistics
} // end of namespace itk
#endif
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